`mDrawerToggle=new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.ic_launcher,
R.string.app_name, R.string.app_name){
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
getActionBar().setTitle(R.string.app_name);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
/** Called when a drawer has settled in a completely open state. */